That's great! There are some dads at my gym whose sons train, and watching them roll together is a treat. From a toughness angle you're spot on. I've never don

That's great! There are some dads at my gym whose sons train, and watching them roll together is a treat. From a toughness angle you're spot on. I've never done anything harder than learn to relax and survive underneath someone bigger who is also attacking. You want to panic, which is the absolute worst thing to do.